Mr. Saturn walks around the stage, pushing other items along with it. It also cries when making contact with an opponent. If thrown, it will deal very little damage and knockback, but it can be used repeatedly, as it does not disappear after one use. As an unconventional meteor smash, Mr. Saturn gives off a large amount of stun when it hits an opponent, making it great for combos. It also does a significant amount of shield damage—21 in Melee and 42 in Brawl. In Smash 4, Mr. Saturn will always instantly break shields no matter how it is thrown, but can be perfect shielded as with other attacks.
In Brawl, the momentum of a projectile will affect the damage a character will receive; these are recorded in bounces.
In SSB4, damage varies based on distance. Projectiles thrown point-blank do more damage.
Note: A Mr. Saturn cannot be dropped while on the ground; the player will throw it instead.
Melee marks Mr. Saturn's debut as an item.
The following bonuses are related to Mr. Saturn:
The origins of the Mr. Saturn race are unknown. But many believe that they come from outer space. They are found in Saturn Valley and speak their own unique language. In Super Smash Bros. Melee, Mr. Saturn is just another item with which to pelt foes. These guys are laid back and not into fighting, so you can rest easy... or can you?
A creature from a race of unknown origin that speaks its own unique language. Some say they came from outer space, but the facts behind their appearance are wrapped in mystery. In Smash Bros., they'll wait a bit after appearing before wandering off on their own. They can be picked up and thrown at foes for minimal damage. Their shield-breaking properties are high.
In Smash Tour
Mr. Saturn appears as a red item: when selected before a battle, it allows the user's attacks to break shields more easily.
A Mr. Saturn Smash is one of the possible battle types: in it, only Mr. Saturns appear as items.
Mr. Saturns are curious beings that speak their own language. They might not look it, but they're scientific geniuses! In this game, they tend to go for a stroll around the battlefield. Throwing one at an enemy won't do much damage, but Mr. Saturn will take out a shield very easily.
Mr. Saturns are curious beings that speak their own language. They might not look it, but they're scientific geniuses! In this game, they tend to just do their own thing, but you can throw them to deal...a bit of damage. They're good at breaking shields, though, and make adorable noises when they do!
OriginEarthBound. Mr. Saturns are strange creatures that reside in Saturn Valley where they provide health care and hotel stays free of charge, while other towns charge more and more as the game progresses. They also have their own eccentric dialect that involves saying either "Zoom", "Boing", "Ding", or the occasional "Dakota" at the end of their sentences. Mr. Saturn also speak in a very distinctive typeface. In an interview with Shigesato Itoi (director of the Mother series), Itoi states that Mr. Saturns are the "symbol of innocence". Mother 3 also features Mr. Saturns, who behave the same way as they did in EarthBound. In Smash, Mr. Saturns simply walk around until they disappear and can be picked up and thrown at other players. Mr. Saturns having a passive attitude in Smash could be a reference to how they're the "symbol of innocence", and the cry that Mr. Saturns make when thrown at another player is likely a reference to their eccentric dialect in EarthBound and Mother 3. 
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